REPORT

To

Ms. Eleanor Ku Codding, P.E.

Eastern Research Group, Inc.

14555 Avion Parkway, Suite 200

Chantilly, VA 20151-1102

For

Clean Water Act 308 / Resource Conservation and 

Recovery Act Section 3007 Information Request

 

UGI Development Company

390 Route 11

P.O. Box 224

Hunlock Creek, PA 18621-0224

Quad3 Project No.: 9477.01

Prepared by:

72 Glenmaura National Boulevard

Moosic, PA 18507

Phone: 570.342.5200

Fax: 570.342.6083

Date: July 2010


Appendix Listing

Appendix Name Size Type Date Created

Appendix A USGW 7.5 minute 

Topographic Map 10255 KB Adobe Acrobat 7/7/2010

Appendix B PADEP 

Stormwater Letter 27 KB Adobe Acrobat 7/8/2010

Appendix C

Locations and 

Boundaries of 

Management 

Areas

439 KB Adobe Acrobat 7/7/10

Appendix D PADEP 26R

Forms 3892 KB Adobe Acrobat 7/8/10

Appendix E Flow Diagrams 516 KB Adobe Acrobat 7/7/10

Appendix F

Bottom Ash and 

Fly Ash and Waste 

Oil Analytical

2599 KB Adobe Acrobat 7/8/10

Appendix G DMRs 29077 KB Adobe Acrobat 7/8/10

Appendix H NPDES Permit 1206 KB Adobe Acrobat 7/7/10

Appendix I Emergency 

Response Plan 5552 KB Adobe Acrobat 7/8/10

Appendix J Groundwater 

Monitoring System 55018 KB Adobe Acrobat 7/8/10

Appendix K Spring Analytical 1612 KB Adobe Acrobat 7/8/10

Appendix L Drinking Water 

Wells 68 KB Adobe Acrobat / 

Microsoft Excel 7/8/10

*Appendix A, C and E are attached as a hard copy as well as on disc. All other attachments are on disc only.
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1. Identify the name, address, telephone number, and location of the current legal owner(s) 

and operator(s) of UGI Development Company, Hunlock Power Station, as well as the 

name, address, telephone number, and location of its parent company.

UGI Development Company owns and operates electricity generation station. UGI Development 

Company was incorporated in 1964 and is based in Hunlock Creek, Pennsylvania. UGI 

Development Company operates as a subsidiary of UGI Energy Services, Inc.

UGI Energy Services, Inc. (Parent Company)

Mike Mara

Director Project Development & Power Plant Operations

One Meridian Blvd

Suite 2C01

Wyomissing, PA 19610

(610) 743-7004 phone 

(610) 374-4288 fax

UGI Development Company

Hunlock Power Station

Mike Mara

Director Project Development & Power Plant Operations

390 Route 11

P.O. Box 224

Hunlock Creek, PA 18621-0224

(570) 830-1267 phone

(570) 830-1191 fax

This information was supplied by; Mr. Jeff Steeber - Staff Engineer; Mr. Jim Dunbar – Chief 

Chemist.

2. On a topographic map, using the most recent USGS 7 1⁄2 minute or 15 minute 

topographic quadrangle map, show the location of the facility boundaries, as well as all 

surface water flows, including tributaries, streams, rivers, lakes, ponds and wetlands, 

within the facility boundaries and that cross into or are adjacent to the facility boundaries.

Appendix A can be found on the attached disc. A hard copy is also included. UGID has supplied 

the topographic map containing the most recent USGS 7 1⁄2 minute topographic quadrangle map 

available. The map was generated by the United States department of the Interior, Geological 

Survey; Nanticoke Quadrangle; Pennsylvania; Luzerne County; 7 1⁄2 minute series. Topography 

by planetable surveys 1944 and revised in 1954. Revisions were made from aerial photographs 

taken in 1969 and 1976. The revisions have not been field checked. 

UGID has identified the facility boundaries. The eastern boundary is the Susquehanna River 

which runs north to south and parallels the UGID facility boundary. The Abandon Cannel travels 
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parallel to the Susquehanna River within the UGID Boundary. The cannel flows north to south. 

UGID has identified the two manmade “surface impoundments” within the UGID boundaries. 

According to the National Wetland Mapping and Pennsylvania E-Mapping system, there are no 

identified wetlands with the UGID boundaries.

This information was supplied by; Mr. Jeff Steeber - Staff Engineer; Mr. Jim Dunbar – Chief 

Chemist.

3. List and label each area located at the facility that the company uses or has used to 

collect, store, treat, or dispose of fly ash, bottom ash, slag, combined fly and bottom ash, 

flue gas desulfurization sludge, co-disposed and co-managed ash and coal refuse, solid 

waste, hazardous water, as well as wastewater, including process wastewater, waste 

slurry or sludge, cooling water, storm water runoff, and sanitary wastewater, on an 

episodic or routine basis (“management areas”). For each of these areas, describe its 

function in managing waste or wastewater. Management areas include, but are not 

limited to, underground mines, underground injection wells, landfills, tanks, ponds, 

lagoons, surface impoundments, storm drains, pipes and surface impoundments.

In the development of management areas within the UGID facility and property, UGID has 

identified a total of six (6) “management areas”. These areas include the following;

Management Area #1 – Fly Ash / Bottom Ash Generation Process

Management Area #1, described as the fly ash / bottom ash generation process, includes a 

description of items use in the generation process. Items such as the collection, treatment and 

disposal of fly ash and bottom ash, the use of surface impoundments and staging areas for both 

fly ash and bottom ash are discussed. 

The Hunlock Power Station was a coal burning power plant which produces ash as an end 

product. Process water is sent to surface impoundments indentified as Ash Surface 

impoundments 003 and Ash Surface impoundment 005 where the ash is allowed to settle to the 

bottom. These impoundments were constantly dredged. The dredged ash is stockpiled and 

allowed to dry. The ash is then removed from the facility.

At the Hunlock Power Station, the Number 6 Boiler is a coal fired unit rated at a normal 450,000 

lbs per hour steam generating capacity. The number 6 boiler is a double arch fired furnace 

manufactured by Foster Wheeler Energy Corporation and was put into service in 1959. The 

steam is used to produce electricity in a 49.9 megawatt nameplate rating Westinghouse Steam 

Turbine Generator. Fly Ash and Bottom Ash are the bi-products of the coal combustion.

The Hunlock Power Station is equipped with two (2) electrostatic precipitators. Rappers have 

been provided in the electrical section of the collectors as well as the dust hopper of the 

electrical collectors. The fly ash from the dust collectors, superheat soot hoppers and the stack 
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is transported pneumatically to a jet and then hydraulically transported to the surface 

impoundments. 

The bottom ash, which is larger and heavier, falls from the boiler into the water filled hopper. 

From the hopper, the bottom ash is transported hydraulically to the surface impoundments.

During its operation, the fly and bottom ash enter into the surface impoundments from separate 

lines, but in the same physical location. The mixing occurs within the surface impoundments. 

Lime is added to the ash slurry being hydraulically transported to the surface impoundments, 

through a lime slurry tank. The pH is monitored to assure the pH of the liquid meets the 

permitted pH range of 6.0 to 9.0.

Each surface impoundment receives the fly ash and bottom ash from process lines leaving the 

main building and discharge into the surface impoundment. The surface impoundments are 

designed to store a total of one hundred and forty-four thousand eight hundred (144,800 cubic 

yards) of ash. On average, 2.1 million gallon per day (mgd) of slurry water flow through the 

surface impoundments, with a maximum of 7.56 mgd. 

UGID continuously and routinely dredges the surface impoundments and removes ash. The 

ash is temporary stored in two main storage areas located next to the surface impoundments. 

The current permit for the impoundments allows the ash to be stored no longer than one year. 

The material typically is removed within 90 days from the generation. 

After the ash is dredged from the impoundment, the material is allowed to dewater before it is 

loaded onto dump trailers and hauled off site for re-use. No additional materials or processes 

are used after the material is stockpiled.

The discharges from the two surface impoundments are monitored and managed under the 

NPDES Permit No. PA-0008664, APS ID No. 5551679 and Authorization ID No. 590637. The 

discharge points are identified as 003 and 005.

NOTE: As of May 22, 2010, this “management area” is no longer in service and is currently 

being closed under the Commonwealth of Pennsylvania, Department of Environmental 

Protection, Northeast Regional Office. This closure is due to a repowering of the plant.

This information was supplied by; Mr. Jeff Steeber - Staff Engineer; Mr. Jim Dunbar – Chief 

Chemist.

Management Area #2 – Solid Waste Management

Solid waste is managed in three locations within the facility. Three solid waste dumpsters store 

the waste until it is picked up by an outside vendor.

This information was supplied by; Mr. Jeff Steeber - Staff Engineer; Mr. Jim Dunbar – Chief 

Chemist.
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Management Area #3 – Cooling Water 

Cooling Water Intake Structure

The Hunlock Power Station withdraws water for condenser cooling, service water, and ash 

sluicing from the Susquehanna River using a single Cooling Water Intake Structure (CWIS). 

The CWIS consists of a screen house at the river with two parallel intake bays that lead to the 

intake pumps. The condenser cooling water system is a once-through type.

The screen house structure is located on the shoreline at the end of the intake channel at 

41o12’03” N latitude and 76o04’09” W longitudes. The screen house has been designed to 

include two parallel flow paths from the river to the pumps. Each flow path includes a trash 

rack, traveling water screen, chlorination equipment, and service water, ash sluice water, and 

circulating water pumps. Each traveling screen can be isolated with stop logs in the inlet and 

outlet sides of the screen. A sluice gate installed between the two flow paths allows for 

operation of all pumps with only one traveling screen in operation.

The trash racks extend from the screen house floor at elevation 483.0 feet above mean sea 

level (MSL) to elevation 512.0 feet (MSL). There are four sections, two per screen house 

opening, with each section designed for lift-out by the gantry crane on top of the screen house 

structure. The trash racks are designed to prevent large floating debris from entering the 

traveling screens. The trash racks are manually cleaned when required. 

The traveling screens are Link-Belt Model No. 45-A Vertical Traveling “Clean Water” intake 

screens with #14 (W&M) wire with 3/8” square openings to reduce entrainment of smaller sized 

materials and organisms in the plant cooling system. The screen baskets are 6’-0” wide with 

55’-0” shaft centers. A screen washing system is provided for cleaning the traveling screens. 

The screens are rotated approximately 30 minutes every shift. The screens are cleaned by a 

high-pressure spray wash that discharges into a collection / debris trough that is 14” deep x 16” 

wide and approximately 22 feet long. The trough runs along both screens at the top of the 

CWIS. At the southern end of the trough, screen wash water passes through a screen 

approximately 15 1⁄2 “ wide x 32” long with 1⁄4” mesh to a pipe which discharges back into the 

inlet channel on the Susquehanna River. 

The intake pumps include two circulating water pumps for main condenser cooling, three 

service water pumps, and two ash sluice water pumps. The pump capacities are based on the 

pump manufacturer’s data and do not account for head loss, pipe capacity and other “as-built” 

conditions. A summary of the pumps, pump function, design capacity, and water source is 

provided in Table 1-1 below. The current total design intake flow is 42,400 gallons per minute 

(gpm), or 61.1 million gallons per day (MGD). 

TABLE 1-1: HUNLOCK STATION INTAKE PUMP DESIGN CAPACITIES1

Pump Description Function

Capacity of Each 

Pump (gpm) Water Source

Unit No. 3A Circulating Pump Unit 3 Condenser Feed 17,0002 Unit 3 Intake Tunnels

Unit No. 3A Circulating Pump Unit 3 Condenser Feed 17,0003 Unit 3 Intake Tunnels

Ash Sluice Pump No. 1 Ash Sluice 1,100 Unit 3 Intake Tunnels

Ash Sluice Pump No. 2 Ash Sluice 1,100 Unit 3 Intake Tunnels

Service Water Pump No.4 Plant Service Water 2,100 Unit 3 Intake Tunnels
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Service Water Pump No. 5 Plant Service Water 2,100 Unit 3 Intake Tunnels

No. 3 Service Water Pump4 Unit 3 Service Water 2,100 Unit 3 Intake Tunnels

Total Capacity CWIS 42,400

The discharge from cooling water is monitored and managed under the NPDES Permit No. PA0008664, APS ID No. 5551679 and Authorization ID No. 590637. The discharge point is 

identified as 001. 

This information was supplied by; Mr. Jeff Steeber - Staff Engineer; Mr. Jim Dunbar – Chief 

Chemist.

Management Area #4 – Storm Water

Concerning storm water management, there is only one surface drain at the UGID facility. The 

storm drain is located in the parking lot. In November 1993, UGID was granted an exemption 

concerning the storm water permit. Stormwater permit no. PAR702204 is referenced in the 

letter. A copy of the letter from the Commonwealth can be found on the attached disc in 

Appendix B. 

This information was supplied by; Mr. Jeff Steeber - Staff Engineer; Mr. Jim Dunbar – Chief 

Chemist.

Management Area #5 – Sewage Treatment Plant

The Sewage Treatment Plant (STP) is located on the northeast side of the UGID property. The 

system is a Smith and Loveness Model V “ADDigest” waste water treatment plant. The system 

is capable of treating 5,000 gallons per day of raw sanitary wastewater with organic loading of 

10 pounds of 5-day BOD per day. The system includes a 5,000 gallon aeration tank, a clarifier 

tank with a surface area of 33.2 square feet to provide an average surface loading rate of 

approximately 151 gallons per day per square foot. The clarifier tank is 6.0’ x 6.0’ x 7’10”. There 

is a sludge removal system and a scum removal system. The effluent is adjusted for pH with 

lime and is also chlorinated during the discharge. The chlorine contact tank has the capacity of 

500 gallons. The effluent is discharged through an 8 inch diameter line that leads to the 

Susquehanna River. The system’s permitted discharge is monitored and managed under the 

NPDES Permit No. PA-0008664, APS ID No. 5551679 and Authorization ID No. 590637. The 

discharge point is identified as 004.

This information was supplied by; Mr. Jeff Steeber - Staff Engineer; Mr. Jim Dunbar – Chief 

Chemist.

Management Area #6 – Coal Storage 

While operating, UGID operated four coal staging areas or zones. These zones are described 

as Coal Zone I, Coal Zone II, Coal Zone III and Coal Zone IV. 
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During the operation, Coal Zones I & II were operated as one coal Zone. The zone has a joint 

storage capacity of approximate 26,000± cubic yards of coal. The surface area of Coal Zones I 

& II is 63,000± square feet. Coal Zone III has an estimated 112,546± square feet and is the 

largest of the four coal zones with a capacity of 47,000 cubic yards of coal. Coal Zone IV is 

located just west of Coal Zones I & II. Coal Zone IV has a coal capacity of 20,700 cubic yards. 

The square footage area of Coal Zone IV is 51,887±.

Surrounding the coals zones is a water collection trench that leads over to a swale pond. The 

pond collects rain water from all four coal zones. The water is then pumped over to the surface 

impoundment, entering surface impoundment 005.

NOTE: As of May 22, 2010, this “management area” is no longer in service and is currently 

being closed under the Commonwealth of Pennsylvania, Department of Environmental 

Protection, Northeast Regional Office. This closure is due to a repowering of the plant.

This information was supplied by; Mr. Jeff Steeber - Staff Engineer; Mr. Jim Dunbar – Chief 

Chemist.

4. For each management area, identify its location and boundaries on the map provided in 

response to request #2.

Appendix C can be found in the attached disc. A hard copy is also included. Appendix C 

contains a site map identified as Drawing title; MANAGEMENT AREA and Drawing Number C1. The scale of the map is 1” = 100 linear feet. Each of the six “management areas” has been 

located along with each boundary. 

This information was supplied by; Mr. Jeff Steeber - Staff Engineer; Mr. Jim Dunbar – Chief 

Chemist.

5. For each management area, describe the area’s approximate storage capacity, the 

volume of waste or wastewater currently stored, and the approximate proportion of free 

liquid and settled solids within the stored wastewater. Explain how the company 

calculated these volumes.

Management Area #1 – Fly Ash / Bottom Ash Generation Process

Surface Impoundments

Each surface impoundment receives fly ash and bottom ash from process lines leaving the main 

building and discharge into the surface impoundment. The surface impoundments are designed 

to store a total of one hundred and forty-four thousand eight hundred (144,800 cubic yards) of 

ash. The surface impoundments are permitted to handle 2.1 mgd of slurry water, with a 

maximum of 7.56 mgd.
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According to the Ash Settling basins and Ash Disposal Area Drawing dated June 12, 1963, the 

surface impoundment identified as the East Basin (Ash Basin 003) on the drawing, was 

constructed to contain the capacity of 71,300 cubic yards. The surface impoundment identified 

as the West Basin (Ash Basin 005) on the drawing, was constructed to contain 73,500 cubic 

yards. Both Surface impoundments together have the capacity to contain 144,800 cubic yards. 

According to the drawing, the top of both dikes were constructed to have an elevation of 535.0 

feet. The bottom of each dike was has an elevation of 525.0 feet. Each surface impoundment

was constructed with two 16 inch diameter discharge pipes that discharged into the cannel. 

Based on the drawing, the surface impoundments were constructed utilizing existing materials 

placed prior to 1963. The existing materials appear to be a mixture of earth and bottom ash. 

The sides of the surface impoundments received 5 feet of earth and were sloped inward 

towards the bottom at a 1.5 to 1 slope.

Ash Storage Areas

UGID operates three separate ash storage areas at the facility. The Main Storage Area, located 

north of surface impoundment (Ash Surface impoundment 005) located contains 79,800± cubic 

yards of ash. This storage area has the capacity of holding 350,000± cubic yards of ash. The 

second area, Center Storage Area, contains 11,000± cubic yards of ash. This area is located 

between surface impoundment 003 and surface impoundment 005 and can contain up to 

25,000± cubic yards. The final storage area, Outer Storage Area, contains 7,400± cubic yards 

of ash. This area is located just east of surface impoundment 003. This storage area has a 

capacity of 80,000± cubic yards. 

Currently, the cubic yards staged within the storage areas are near 75% capacity. The ash 

material is staged as part of the dewatering procedure. Concrete barriers and hay bales are 

placed along the perimeters of the storage areas to address runoff potential. The material is 

stable and stored above ground. The facility generates 40,000 to 60,000 tons of ash per year. 

This is based on burning 200,000± tons of coal with 25% to 30% ash content. 

The quantities and area dimensions were generated from a recent survey conducted at the 

facility. The licensed surveyor and professional engineer generated the sizes and quantities.

This information was supplied by; Mr. Jeff Steeber - Staff Engineer; Mr. Jim Dunbar – Chief 

Chemist.

Management Area #2 – Solid Waste Management

The storage capacity of Management Area #2, Solid Waste Management, UGID has three 

dumpsters, 1-20 cubic yard container and 2-10 cubic yard containers. These containers hold the 

solid waste (plant trash) for disposal off site at a licensed facility. There are no free liquids or 

wastewater generated.

This information was supplied by; Mr. Jeff Steeber - Staff Engineer; Mr. Jim Dunbar – Chief 

Chemist.
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Management Area #3 – Cooling water

Concerning Management Area #3, there is no waste or wastewater stored; there are no free

liquids or solids generated. 

This information was supplied by; Mr. Jeff Steeber - Staff Engineer; Mr. Jim Dunbar – Chief 

Chemist.

Management Area #4 – Stormwater Runoff

Concerning Management Area #4, there is no waste or wastewater stored; there are no free 

liquids or solids generated. 

This information was supplied by; Mr. Jeff Steeber - Staff Engineer; Mr. Jim Dunbar – Chief 

Chemist.

Management Area #5 – Sewage Treatment Plant 

The Sewage Treatment Plant (STP) is capable of treating 5,000 gallons per day of raw sanitary 

wastewater. The system includes a 5,000 gallon aeration tank, a clarifier tank with a surface 

area of 33.2 square feet to provide an average surface loading rate of approximately 151 

gallons per day per square foot. The clarifier tank is 6.0’ x 6.0’ x 7’10”. There is a sludge 

removal system and a scum removal system. A total of 1500 gallons of sludge is removed on 

an annual base and is transported and disposed of at Wyoming Valley Sanitary Sewer Authority 

Sewage Treatment plant, Wilkes-Barre, PA.

The effluent is adjusted for pH with lime and is also chlorinated during the discharge. The 

chlorine contact tank has the capacity of 500 gallons. The effluent is discharged through an 8 

inch diameter line that leads to the Susquehanna River. The system permitted discharge is 

monitored and managed under the NPDES Permit No. PA-0008664, APS ID No. 5551679 and 

Authorization ID No. 590637. The discharge point is identified as 004. Under the permit, the 

sewage treatment system is permitted to discharge on average 2.3 tgd (thousand gallons per 

day) with a maximum of 4.8 tgd. 

This information was supplied by; Mr. Jeff Steeber - Staff Engineer; Mr. Jim Dunbar – Chief 

Chemist.

Management Area #6 – Coal Storage

During the operation, Coal Zones I & II were operated as one coal Zone. The zone has a joint 

storage capacity of approximate 26,000± cubic yards of coal. The surface area of Coal Zones I 

& II is 63,000± square feet. Coal Zone III has an estimated 112,546± square feet and is the 

largest of the four coal zones with a capacity of 47,000 cubic yards of coal. Coal Zone IV is 

located just west of Coal Zones I & II. Coal Zone IV has a coal capacity of 20,700 cubic yards. 

The square footage area of Coal Zone IV is 51,887±.
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Free liquid in the form of rainwater is collected in a concrete trench that leads to the swale pond. 

The pond collects rain water from all four coal zones. The water is then pumped over to the 

surface impoundment, entering surface impoundment 005. The volume of the water depends 

mainly on the amount of rainfall and snow cover during the year. 

According to the National Weather Service, Avoca, PA, the average precipitation for the 2009 

season was 37.56 inches. Using the total square footage of the coal storage area, (237,433 

square feet) and knowing the amount of precipitation, the maximum amount of water generated 

from the coal surface impoundment storage area was 461,759± gallons. This number does not 

include a loss to evaporation or groundwater. 

The volume of water generated from this collection pond is not recorded on a daily, monthly or 

yearly basis. The main reason for this is based on the water collected in the coal surface 

impoundments is discharge to the surface impoundment. The discharge from the surface 

impoundment accounts for this water.

This information was supplied by; Mr. Jeff Steeber - Staff Engineer; Mr. Jim Dunbar – Chief 

Chemist.

6. Provide the name of any entity with whom you have contracted for the disposal, sale, or 

reuse/recycling of coal combustion waste generated from your facility for the past five (5) 

years.

The following is a list of the clients who UGID have contracted for the disposal, sale, or 

reuse/recycled fly and or bottom ash over the past five years; 

2005

Jackson Township

862 Waller Divide Road, 

Benton, Columbia County, 

Benton, PA 17814

Carl D. Remly, Supervisor (570.925.2401)

707.91 ton Bottom Ash

Franklin Township

P.O. Box 865

Franklin Township, Lycoming County

Lairdsville, PA 17742

Bill Fones, Supervisor (570.584.3240)

1323.96 ton Bottom Ash

Jordan Township

7298 Route 42 HWY
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Jordan Township, Columbia County

Unityvile, PA 17774

Dale Stackhouse, Supervisor (570.458.5450)

913.29 ton Bottom Ash

Sugarloaf Township

90 School House Road

Benton, Columbia County

Benton, PA 17814

Terri Adams, Secretary (570.925.6031)

322.60 ton Bottom Ash

UGI Development Company, Hunlock Power Station

390 Route 11, P.O. Box 224

Hunlock Township, Luzerne County

Hunlock Creek, PA 18621

Jeff Steeber, Staff Engineer (570.830.1267)

57.89 ton Bottom Ash

Lehigh Coal & Navigation

101 North Center Street

Pottsville, Schuylkill County

Pottsville, PA 17901

Ed Stott, Vice President Operations (570.628.0654)

14,798.64 ton Fly Ash

Emerald Anthracite

P.O. Box 27

Nanticoke, Luzerne County

Nanticoke, PA 18634

Ken Pollock Jr., General Manager (570.735.4800)

41,842.24 ton Fly Ash

Gale Coal

1441 Oak Road

Pottsville, Schuylkill County

Pottsville, PA 17901

Job Seunder, Owner (570.622.2524)

3,786.01 ton Fly Ash
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2006

Jackson Township

862 Waller Divide Road, 

Benton, Columbia County, 

Benton, PA 17814

Carl D. Remly, Supervisor (570.925.2401)

825.77 ton Bottom Ash

Franklin Township

P.O. Box 865

Franklin Township, Lycoming County

Lairdsville, PA 17742

Bill Fones, Supervisor (570.584.3240)

2,120.34 ton Bottom Ash

Sugarloaf Township

90 School House Road

Benton, Columbia County

Benton, PA 17814

Terri Adams, Secretary (570.925.6031)

616.77 ton Bottom Ash

UGI Development Company, Hunlock Power Station

390 Route 11, P.O. Box 224

Hunlock Township, Luzerne County

Hunlock Creek, PA 18621

Jeff Steeber, Staff Engineer (570.830.1267)

50.00 ton Bottom Ash

Stollberg, Inc.

4113 Witmer Road

Niagara Falls, NY 15305

Nikki Grunau, Staff Assistant (716.284.8753)

23.24 ton Fly Ash
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2007

Jordan Township

7298 Route 42 HWY

Jordan Township, Columbia County

Unityvile, PA 17774

Dorothy Whitmoyer, Secretary (570.458.6880)

522.89 ton Bottom Ash

Sugarloaf Township

90 School House Road

Benton, Columbia County

Benton, PA 17814

Terri Adams, Secretary (570.925.6031)

103.31 ton Bottom Ash

Susquehanna Coal (Glen Lyon Operation)

P.O. Box 27

Newport Township, Luzerne County

Nanticoke, PA 18634

Dave Labenski, Engineer (570735.8400)

8,776.03 ton Fly Ash

2008

Jordan Township

7298 Route 42 HWY

Jordan Township, Columbia County

Unityvile, PA 17774

Dorothy Whitmoyer, Secretary (570.458.6880)

1,176.76 ton Bottom Ash

Sugarloaf Township

90 School House Road

Benton, Columbia County

Benton, PA 17814

Terri Adams, Secretary (570.925.6031)

1,360.28 ton Bottom Ash
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UGI Development Company, Hunlock Power Station

390 Route 11, P.O. Box 224

Hunlock Township, Luzerne County

Hunlock Creek, PA 18621

Jeff Steeber, Staff Engineer (570.830.1267)

2,873.01 ton Bottom Ash

Franklin Township

P.O. Box 865

Franklin Township, Lycoming County

Lairdsville, PA 17742

Bill Fones, Supervisor (570.584.3240)

240.17 ton Bottom Ash

Dorrance Township

7844 Blue Ridge Trail

Mountaintop, Luzerne

Mountaintop, PA 18707

Barbara Wasikowski, Secretary (570.868.6394)

7.21 ton Bottom Ash

Moreland Township

1220 Moreland Township Road

Moreland Township, Lycoming County

Muncy, PA 17756

710.77 ton Bottom Ash

Huntington Township

815 Municipal Road

Shickshinny, Luzerne County

Shickshinny, PA 18655

Bill Siegfred, Road Foreman (570.864.2303)

7.85 ton Bottom Ash

Fishing Creek Township

3188 State Route 487

Orange Township, Columbia County

Orangeville, PA 17859

Randy Hack

Chairman of Supervisors (570.683.5900)

24.47 ton Bottom Ash
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Susquehanna Coal (Glen Lyon Operation)

P.O. Box 27

Newport Township, Luzerne County

Nanticoke, PA 18634

Dave Labenski, Engineer (570735.8400)

91,325.99 ton Fly Ash

2009

Jordan Township

7298 Route 42 HWY

Jordan Township, Columbia County

Unityvile, PA 17774

Dorothy Whitmoyer, Secretary (570.458.6880)

661.42 ton Bottom Ash

Sugarloaf Township

90 School House Road

Benton, Columbia County

Benton, PA 17814

Terri Adams, Secretary (570.925.6031)

633.40 ton Bottom Ash

UGI Development Company, Hunlock Power Station

390 Route 11, P.O. Box 224

Hunlock Township, Luzerne County

Hunlock Creek, PA 18621

Jeff Steeber, Staff Engineer (570.830.1267)

22.77 ton Bottom Ash

Franklin Township

P.O. Box 865

Franklin Township, Lycoming County

Lairdsville, PA 17742

Bill Fones, Supervisor (570.584.3240)

572.91 ton Bottom Ash

Black Mountain Quarry

121 Gravel Road

Hunlock Township, Luzerne County

Hunlock Creek, PA 18621
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Chris Coleman, President (570.256.3036)

130.91 ton Bottom Ash

Susquehanna Coal (Glen Lyon Operation)

P.O. Box 27

Newport Township, Luzerne County

Nanticoke, PA 18634

Dave Labenski, Engineer (570735.8400)

52,147.70 ton Fly Ash

Appendix D on the attached disc contains the Commonwealth of Pennsylvania, Department of 

Environmental Protection, Bureau of Waste Management, Form 26R, Chemical Analysis of 

Residual Waste Annual Report by the Generator.

This information was supplied by; Mr. Jeff Steeber - Staff Engineer; Mr. Jim Dunbar – Chief 

Chemist.

7. Identify all the waste streams generated at the facility in the past five (5) years. 

Referring to the labels provided for each management area; provide a flow diagram 

showing each waste stream from the source of generation to its final disposition. In the 

flow diagram, include the following information: (a) descriptions of the waste streams 

(including, but not limited to, fly ash, bottom ash and slag, combined fly and bottom ash, 

flue gas desulfurization sludge, co-disposed and co-managed ash and coal refuse) and 

their chemical characterizations; (b) the daily and annual volume of each waste stream 

flow; and (c) the final disposition of the waste streams, including materials recycled or 

otherwise destined for beneficial use.

There are four waste streams generated from two different management areas; Management 

Area #1 – Fly Ash / Bottom Ash Generation Process and Management Area #2 – Solid Waste 

Management. Management Area #1 generates Bottom Ash, Fly Ash and waste oil. Waste oil is

used in the process as a fuel source. Management Area #2 generates plant trash. 

A Hard copy of the flow diagram of each waste stream can be found in Appendix E. The flow 

diagrams can also be found in Appendix E on the attached disc.

Below is the list of waste streams generated and removed from the facility; the quantities were 

obtained from Appendix D on the attached disc. As identified earlier, Appendix D contains the 

Commonwealth of Pennsylvania, Department of Environmental Protection, Bureau of Waste 

Management, Form 26R, Chemical Analysis of Residual Waste Annual Report by the 

Generator.
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a) Description of waste streams

Fly Ash - Fly Ash is produced from the burning of pulverized coal in a coal-fired boiler is a finegrained, powdery particulate material that is collected from the flue gas by means of 

electrostatic precipitators. 

Bottom Ash - Bottom ash is a coarse, granular, incombustible byproduct that is collected from 

the bottom of furnaces that burn coal for the generation of steam, the production of electric 

power, or both. Bottom ash is coarser than fly ash, with grain sizes spanning from fine sand to 

fine gravel. 

Plant Trash – Plant trash is unwanted or undesired waste material generated over the course of 

a day at the facility. Materials such as floor sweepings, office trash, papers, wood, etc.

Waste Oil- Waste oil is defined as any petroleum-based or synthetic oil that, through use or 

handling, has become unsuitable for its original purpose due to the presence of impurities or 

loss of original properties.

b) Daily and Annual Volumes

Fly Ash and Bottom Ash

UGID generates an estimated total of 40,000 to 60,000 tons of Ash annually. In 2005 a total of 

164,904 dry tons of coal was burned. At 25.08% Ash, a total of 41,358 tons of Ash was 

generated. Of the 41,358 tons of Ash, 37,222 (90%) was Fly Ash and 4,136 (10%) was Bottom 

Ash. Based on UGID’s 322.2 operating days in 2009, an average of 115.5 tons of Fly Ash and 

12.8 tons of Bottom Ash was generated per day.

In 2006 a total of 158,830 dry tons of coal was burned. At 25.57% Ash, a total of 40,613 tons of 

Ash was generated. Of the 40,613 tons of Ash, 36,552 (90%) was Fly Ash and 4,061 (10%) 

was Bottom Ash. Based on UGID’s 346.5 operating days in 2006, an average of 105.5 tons of 

Fly Ash and 11.7 tons of Bottom Ash was generated per day.

In 2007 a total of 177,067 dry tons of coal was burned. At 27.10% Ash, a total of 47,985 tons of 

Ash was generated. Of the 47,985 tons of Ash, 43,187 (90%) was Fly Ash and 4,799 (10%) 

was Bottom Ash. Based on UGID’s 336.9 operating days in 2007, an average of 128.2 tons of 

Fly Ash and 14.2 tons of Bottom Ash was generated per day.
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In 2008 a total of 186,586 dry tons of coal was burned. At 26.84% Ash, a total of 50,080 tons of 

Ash was generated. Of the 50,080 tons of Ash, 45,072 (90%) was Fly Ash and 5,008 (10%) 

was Bottom Ash. Based on UGID’s 333.6 operating days in 2008, an average of 135.1 tons of 

Fly Ash and 15.0 tons of Bottom Ash was generated per day.

In 2009 a total of 181,480 dry tons of coal was burned. At 31.94% Ash, a total of 57,965 tons of 

Ash was generated. Of the 57,965 tons of Ash, 52,168 (90%) was Fly Ash and 5,796 (10%) 

was Bottom Ash. Based on UGID’s 339.5 operating days in 2009, an average of 153.7 tons of 

Fly Ash and 17.1 tons of Bottom Ash was generated per day. 

Plant Trash

2005

66.99 ton of Plant Trash, Residual Waste Code 710 in solid form and various colors and odors.

A daily total generated is 0.18 tons.

2006

42.21 ton of Plant Trash, Residual Waste Code 710 in solid form and various colors and odors.

A daily total generated is 0.11 tons.

2007

49.20 ton of Plant Trash, Residual Waste Code 710 in solid form and various colors and odors.

A daily total generated is 0.13 tons.

2008

70.36 ton of Plant Trash, Residual Waste Code 710 in solid form and various colors and odors.

A daily total generated is 0.19 tons.

2009

70.00 ton of Plant Trash, Residual Waste Code 710 in solid form and various colors and odors.

A daily total generated is 0.19 tons.
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Waste Oil

2005

3,907.0 Gal Waste Oil, Residual Waste Code 509 in liquid waste form (EPA Method 9095), 

brown/black (varies) in color with 1 phase of separation. A daily total generated is 10.7 gallons.

2006

3,520.0 Gal Waste Oil, Residual Waste Code 509 in liquid waste form (EPA Method 9095), 

brown/black (varies) in color with 1 phase of separation. A daily total generated is 9.64 gallons.

2007

No Waste Oil Reported

2008

880.0 Gal Waste Oil, Residual Waste Code 509 in liquid waste form (EPA Method 9095), 

brown/black (varies) in color with 1 phase of separation. A daily total generated is 2.41 gallons.

2009

3,630.0 Gal Waste Oil, Residual Waste Code 509 in liquid waste form (EPA Method 9095), 

brown/black (varies) in color with 1 phase of separation. A daily total generated is 9.94 gallons.

c) Final disposition of the waste streams

As requested, the final disposition is listed below. Fly ash and bottom ash are listed together. 

The waste oil is burned on site with the coal. 

The plant trash is transported to Keystone Sanitary Landfill, Dunmore PA. Chemical analysis of 

the waste streams can be found in Appendix D on the attached disc.

Appendix D on the attached disc contains the Commonwealth of Pennsylvania, Department of 

Environmental Protection, Bureau of Waste Management, Form 26R, Chemical Analysis of 

Residual Waste Annual Report by the Generator.

Fly Ash and Bottom Ash
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2005

Jackson Township

862 Waller Divide Road, 

Benton, Columbia County, 

Benton, PA 17814

Carl D. Remly, Supervisor (570.925.2401)

707.91 ton Bottom Ash

Franklin Township

P.O. Box 865

Franklin Township, Lycoming County

Lairdsville, PA 17742

Bill Fones, Supervisor (570.584.3240)

1323.96 ton Bottom Ash

Jordan Township

7298 Route 42 HWY

Jordan Township, Columbia County

Unityvile, PA 17774

Dale Stackhouse, Supervisor (570.458.5450)

913.29 ton Bottom Ash

Sugarloaf Township

90 School House Road

Benton, Columbia County

Benton, PA 17814

Terri Adams, Secretary (570.925.6031)

322.60 ton Bottom Ash

UGI Development Company, Hunlock Power Station

390 Route 11, P.O. Box 224

Hunlock Township, Luzerne County

Hunlock Creek, PA 18621

Jeff Steeber, Staff Engineer (570.830.1267)

57.89 ton Bottom Ash

Lehigh Coal & Navigation

101 North Center Street

Pottsville, Schuylkill County

Pottsville, PA 17901
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Ed Stott, Vice President Operations (570.628.0654)

14,798.64 ton Fly Ash

Emerald Anthracite

P.O. Box 27

Nanticoke, Luzerne County

Nanticoke, PA 18634

Ken Pollock Jr., General Manager (570.735.4800)

41,842.24 ton Fly Ash

Gale Coal

1441 Oak Road

Pottsville, Schuylkill County

Pottsville, PA 17901

Job Seunder, Owner (570.622.2524)

3,786.01 ton Fly Ash

2006

Jackson Township

862 Waller Divide Road, 

Benton, Columbia County, 

Benton, PA 17814

Carl D. Remly, Supervisor (570.925.2401)

825.77 ton Bottom Ash

Franklin Township

P.O. Box 865

Franklin Township, Lycoming County

Lairdsville, PA 17742

Bill Fones, Supervisor (570.584.3240)

2,120.34 ton Bottom Ash

Sugarloaf Township

90 School House Road

Benton, Columbia County

Benton, PA 17814

Terri Adams, Secretary (570.925.6031)

616.77 ton Bottom Ash

UGI Development Company, Hunlock Power Station
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390 Route 11, P.O. Box 224

Hunlock Township, Luzerne County

Hunlock Creek, PA 18621

Jeff Steeber, Staff Engineer (570.830.1267)

50.00 ton Bottom Ash

Stollberg, Inc.

4113 Witmer Road

Niagara Falls, NY 15305

Nikki Grunau, Staff Assistant (716.284.8753)

23.24 ton Fly Ash

2007

Jordan Township

7298 Route 42 HWY

Jordan Township, Columbia County

Unityvile, PA 17774

Dorothy Whitmoyer, Secretary (570.458.6880)

522.89 ton Bottom Ash

Sugarloaf Township

90 School House Road

Benton, Columbia County

Benton, PA 17814

Terri Adams, Secretary (570.925.6031)

103.31 ton Bottom Ash

Susquehanna Coal (Glen Lyon Operation)

P.O. Box 27

Newport Township, Luzerne County

Nanticoke, PA 18634

Dave Labenski, Engineer (570735.8400)

8,776.03 ton Fly Ash

2008

Jordan Township

7298 Route 42 HWY

Jordan Township, Columbia County
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Unityvile, PA 17774

Dorothy Whitmoyer, Secretary (570.458.6880)

1,176.76 ton Bottom Ash

Sugarloaf Township

90 School House Road

Benton, Columbia County

Benton, PA 17814

Terri Adams, Secretary (570.925.6031)

1,360.28 ton Bottom Ash

UGI Development Company, Hunlock Power Station

390 Route 11, P.O. Box 224

Hunlock Township, Luzerne County

Hunlock Creek, PA 18621

Jeff Steeber, Staff Engineer (570.830.1267)

2,873.01 ton Bottom Ash

Franklin Township

P.O. Box 865

Franklin Township, Lycoming County

Lairdsville, PA 17742

Bill Fones, Supervisor (570.584.3240)

240.17 ton Bottom Ash

Dorrance Township

7844 Blue Ridge Trail

Mountaintop, Luzerne

Mountaintop, PA 18707

Barbara Wasikowski, Secretary (570.868.6394)

7.21 ton Bottom Ash

Moreland Township

1220 Moreland Township Road

Moreland Township, Lycoming County

Muncy, PA 17756

710.77 ton Bottom Ash

Huntington Township

815 Municipal Road

Shickshinny, Luzerne County

Shickshinny, PA 18655
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Bill Siegfred, Road Foreman (570.864.2303)

7.85 ton Bottom Ash

Fishing Creek Township

3188 State Route 487

Orange Township, Columbia County

Orangeville, PA 17859

Randy Hack

Chairman of Supervisors (570.683.5900)

24.47 ton Bottom Ash

Susquehanna Coal (Glen Lyon Operation)

P.O. Box 27

Newport Township, Luzerne County

Nanticoke, PA 18634

Dave Labenski, Engineer (570735.8400)

91,325.99 ton Fly Ash

2009

Jordan Township

7298 Route 42 HWY

Jordan Township, Columbia County

Unityvile, PA 17774

Dorothy Whitmoyer, Secretary (570.458.6880)

661.42 ton Bottom Ash

Sugarloaf Township

90 School House Road

Benton, Columbia County

Benton, PA 17814

Terri Adams, Secretary (570.925.6031)

633.40 ton Bottom Ash

UGI Development Company, Hunlock Power Station

390 Route 11, P.O. Box 224

Hunlock Township, Luzerne County

Hunlock Creek, PA 18621

Jeff Steeber, Staff Engineer (570.830.1267)

22.77 ton Bottom Ash
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Franklin Township

P.O. Box 865

Franklin Township, Lycoming County

Lairdsville, PA 17742

Bill Fones, Supervisor (570.584.3240)

572.91 ton Bottom Ash

Black Mountain Quarry

121 Gravel Road

Hunlock Township, Luzerne County

Hunlock Creek, PA 18621

Chris Coleman, President (570.256.3036)

130.91 ton Bottom Ash

Susquehanna Coal (Glen Lyon Operation)

P.O. Box 27

Newport Township, Luzerne County

Nanticoke, PA 18634

Dave Labenski, Engineer (570735.8400)

52,147.70 ton Fly Ash

This information was supplied by; Mr. Jeff Steeber - Staff Engineer; Mr. Jim Dunbar – Chief 

Chemist.

8. Provide any testing and analyses relied on to determine the characterization of the 

waste streams, as well as any sampling results of the waste streams obtained by the 

facility for the past five (5) years. For any sampling results provided, include a 

description of the sampling procedures used.

On the attached disc, Appendix F contains the testing and analysis to determine the 

characterization of the waste streams for bottom ash, fly ash and waste oil over the past five 

years. There is no analysis for plant trash obtained over the past 5 years. 

From 2005 through 2007, grab samples on a monthly basis were used to characterize the fly 

ash and bottom ash. During 2008 and 2009, composite sampling was used. A composite 

sample of both bottom ash and fly ash was obtained on a weekly basis while the ash was 

dewatered. At the end of a calendar month, the samples were composited and set to an 

independent laboratory for analysis. 

Concerning waste oil, a grab sample of the oil was obtained prior to burning the oil at the facility. 
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This information was supplied by; Mr. Jeff Steeber - Staff Engineer; Mr. Jim Dunbar – Chief 

Chemist.

9. Describe any wastewater discharges, including overflows, diversions, or other releases 

that occur or have occurred within the last ten (10) years from the management areas to 

surface waters, including tributaries, streams, rivers, lakes, ponds, and wetlands. 

Identify the discharge points and runoff paths on the map provided in response to 

request #2. Provide any analytical data or monitoring results from the last five (5) years 

that demonstrate hazardous constituents in the wastewater discharges from the 

management areas to surface waters. Identify the management plans and treatment 

technologies that the company implements to control its wastewater discharges. 

Provide a copy of the National Pollutant Discharge Elimination System (“NPDES”) permit 

that authorizes these wastewater discharges. If the company has not obtained permit 

coverage, proved an explanation for this lack of coverage. Submit any discharge 

monitoring reports in which the company reported wastewater violations from the last 

five (5) years.

Provide any analytical data or monitoring results from the last five (5) years that demonstrate 

hazardous constituents in the wastewater discharges from the management areas to surface 

waters. There are four discharge points, 001, 003, 004 and 005 associated with the NPDES 

Permit No. PA-0008664, APS ID# 551679, Authorization ID No. 590637. The permit effective 

date is 2/1/2006 and expires 1/31/2011.

In the event of a wastewater violation, the violation is identified in the Discharge Monitoring 

Permit (DMR’s) for that particular discharge point. The DMR’s can be found on the attached 

disc in Appendix G.

Discharge Point 001

Discharge point is located at Latitude of 41°12’02” and Longitude 76°04’12” at River Index 35.5 

and stream code 06685. The description of the discharge is once through cooling water. An 

average of 49.1 mgd and maximum of 79.2 mgd of water is drawn into the steam station and 

used as non contact cooling water. The discharge point has an average of 49.1 mgd and 

maximum of 79.2 mgd discharge daily. The intake from the river is sampled for Oil and Grease, 

while the effluent is sampled for Oil and Grease, Total Chlorine Residual, pH and Temperature. 

UGID does not perform treatment to the intake or the effluent from this process. The Discharge 

Monitoring Reports (DMRs), for the past five years, for this discharge point can be found in 

Appendix G on the attached disc. 

Discharge Point 003 - 005

Discharge points 003 and 005 are located at Latitude of 41°11’59” and Longitude 76°04’28” at 

River Index 35.5 and stream code 06685. The description of the discharge is from the boiler 

blow down, ash transport and coal prep plant. An average of 1.0 mgd and maximum of 1.6 mgd 

of water is drawn into the coal prep plant and used as non contact cooling water. The discharge 

point has an average of 1.0 mgd and maximum of 1.6 mgd discharge daily into the industrial 

waste treatment, which empties into the impoundments 003 and 005. Additional processes part 

of the Industrial Waste Treatment include blow down from Boiler 006 which has an intake of 260 

gallons per day (gpd) to a max of 360 gpd. Ash transport from the steam station uses 1.2 mgd 
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to a maximum of 2.4 mgd. The combustion turbine facility adds 0.01 mgd to the impoundments. 

Stormwater runoff adds 3.5 mgd based on 24 hour duration, 10 year rainfall. In the event of 

rain, rainwater runoff can contribute 50 tgd to the impoundments. The impoundments discharge 

point can discharge 2.21 mgd average and has a maximum of 7.56 mgd. The discharge point is 

sampled for Total Suspended Solids, Oil and Grease, Total Iron, total Manganese and pH. 

UGID does perform treatment to the effluent from this process. Before entering the 

impoundments, pH is applied. Lime is added to maintain the pH of the slurry water at 6.0 to 9.0.

The Discharge Monitoring Reports (DMRs), for the past five years, for these discharge points

can be found on the attached disc; Appendix G.

Discharge Point 004

Discharge point is located at Latitude of 41°12’06” and Longitude 76°04’04” at River Index 35.5 

and stream code 06685. The description of the discharge is the sewage treatment facility. An 

average of 2.3 mgd and maximum of 4.8 mgd of water is used in the process. The effluent is 

sampled for flow, CBOD, Total Suspended Solids, Total Residual Chlorine, pH, Fecal Coliform. 

UGID does perform treatment to the effluent from this process. The treatment involves the 

settling of solids in an aeration tank and clarifier. Then the waste water is treated the discharge 

water with chlorination. The Discharge Monitoring Reports (DMRs), for the past five years, for 

this discharge point can be found on the attached disc; Appendix G. 

UGID has provided a copy of the National Pollutant Discharge Elimination System (“NPDES”) 

permit that authorizes these wastewater discharges can be found on the attached disc;

Appendix H. 

This information was supplied by; Mr. Jeff Steeber - Staff Engineer; Mr. Jim Dunbar – Chief 

Chemist.

10. For all storm water discharges associated with the industrial activity from the facility, as 

defined at 40 C.F.R.§ 122.26(a)(14), identify the industrial activity (including the 

appropriate NAICS and SIC codes) that requires coverage under an NPDES permit. 

NACIS Codes and SIC Codes

NACIS Code 2211; Electric Power Generation, Transmission and Distribution

This industry group comprises establishments primarily engaged in generating, transmitting,

and/or distributing electric power. Establishments in this industry group may perform one or 

more of the following activities: (1) operate generation facilities that produce electric energy; (2) 

operate transmission systems that convey the electricity from the generation facility to the 

distribution system; and (3) operate distribution systems that convey electric power received 

from the generation facility or the transmission system to the final consumer. 

6 Digit NACIS Code: 221112- Fossil Fuel Electric Power Generation
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This U.S. industry comprises establishments primarily engaged in operating fossil fuel powered 

electric power generation facilities. These facilities use fossil fuels, such as coal, oil, or gas, in

internal combustion or combustion turbine conventional steam process to produce electric 

energy. The electric energy produced in these establishments are provided to electric power 

transmission systems or to electric power distribution systems. 

The data published with NAICS code 221112 is comprised of these parts of the following SIC 

industries:

 4911 (pt) - Electric services (electric power generation by fossil fuels)

 4931 (pt) - Electric and other services combined (electric power generation by fossil fuels) 

 4939 (pt) - Combination utilities nec (electric power generation by fossil fuels)

There are four discharge points, 001, 003, 004 and 005 associated with the NPDES Permit No. 

PA-0008664, APS ID# 551679, Authorization ID No. 590637. The permit effective date is 

2/1/2006 and expires 1/31/2011.

Discharge point 001 is located at Latitude of 41°12’02” and Longitude 76°04’12” at River Index 

35.5 and stream code 06685. The description of the discharge is once through cooling water.

Discharge points 003 and 005 are located at Latitude of 41°11’59” and Longitude 76°04’28” at 

River Index 35.5 and stream code 06685. The description of the discharge is from the boiler 

blow down, ash transport and coal prep plant.

Discharge point 004 is located at Latitude of 41°12’06” and Longitude 76°04’04” at River Index 

35.5 and stream code 06685. The description of the discharge is the sewage treatment facility.

In addition to the information provided about these discharges in response to request #9, 

provide a copy of the facility’s current Stormwater Pollution Prevention Plan (SWPPP), as well 

as copies of its comprehensive site evaluations, inspection records, and monitoring results for 

the last five (5) years. If the company has not developed a SWPPP, provide an explanation for 

this decision. 

The Pennsylvania Department of Environmental Protection requires storm water discharges to 

prepare a Preparedness, Prevention and Contingency Plan (PPC Plan) in place of a SWPPP. A 

copy of UGID’s PPC plan can be found on the attached disc; Appendix I

This information was supplied by; Mr. Jeff Steeber - Staff Engineer; Mr. Jim Dunbar – Chief 

Chemist.

11. Describe any groundwater monitoring system in place at the facility. Provide any 

groundwater sampling and analysis plans, groundwater monitoring results that detected 

releases of hazardous constituents, and corrective actions taken in response to 

groundwater contamination. Identify the location groundwater monitoring wells, both 

active and inactive, on the map provided in response to request #2
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A groundwater-monitoring program was established in July 1997 to provide data on the 

groundwater in the immediate area of the surface impoundments. A total of four (4) monitoring 

wells, designated MW-4, MW-5, MW-6 and MW-7, were installed throughout the facility. These 

wells were installed as part of the monitoring requirements for the surface impoundments. 

Reviewing the installation information, the four (4) wells were completed to a depth of 

approximately 15 feet below the static water level. Each well was screened from approximately 

15 feet below the static water level to 5 feet above the static water level. The depth of each 

well is 40 to 55-feet below ground surface (bgs). Each well was cased with Schedule 40 PVC 

with 0.020-inch factory slotted screen. No. 2 grade sand pack was placed in the annulus from 

the base of the screen to approximately two feet above the top of the screen. A bentonite seal 

to the ground surface was installed. Following the installation of the PVC casings, steel casing 

was installed to secure the PVC well. The locations of wells were chosen utilizing a number of 

sources namely soil atlases, topographic maps, the site layout, water well inventory data and 

historic Fly Ash case studies. The July 1997 report determined the upgradient-monitoring well 

to be MW-4. Monitoring well MW-4 is located at the northwest corner of the subject property. 

The monitoring well is located as the point at facility which is not likely to be affected by the two 

surface impoundments and most likely to provide representative background water data. 

According to the July 1997 report, three additional monitoring wells (MW-5, MW-6 and MW-7) 

were installed at three separate locations; all are hydraulically down gradient in the direction of 

decreasing static head from the surface impoundments. The wells were installed along the strip 

of land between the surface impoundments and the Susquehanna River. The strip of land 

makes up the southwest border of the property. 

UGID contracted Quad Three Group, Inc. to conduct a groundwater assessment at the Hunlock 

Power Station, Hunlock Creek, in August of 2008. The assessment included a total of thirty (30) 

soil boring were completed throughout the subject property, with each of them being developed 

into a 0.75” preliminary groundwater monitoring well. Two rounds of groundwater samples were 

collected from the 30 wells in September and October of 2008. From the data collected, a 

Groundwater Assessment report was submitted the Pennsylvania Department of Environmental 

Protection (PADEP) in December of 2008. 

On February 10, 2009, UGID received correspondence from the PADEP in response to the 

December 2008 report. Based on PADEP’s recommendation, seven (7) 4” diameter 

groundwater monitoring wells were installed throughout the subject property. These seven 

wells, plus the four previously existing wells were sampled once in April and once in May of 

2009. 

An additional 133 soil borings were performed throughout the subject property in an effort to 

address the site-wide subsurface media composition as well as surface impoundment liner 

integrity.
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Addendum #1 was submitted to PADEP in August of 2009. PADEP responded with a letter 

dated January 6, 2010, addressed to Mr. Jeffrey Steeber, UGID, requesting more explanation of 

findings as well as some additional work. 

In March of 2010, an additional 4” groundwater monitoring well was installed at the southeast 

portion of the property. This well was sampled in March of 2010 and analytical data was 

included in the First Quarterly Groundwater Report (January, February, March) of 2010.

A copy of the groundwater assessment and addendums including analytical for groundwater 

and soil samples, boring logs as well as the latest quarterly groundwater monitoring report, can 

be found on the attached disc; Appendix J 

This information was supplied by; Mr. Jeff Steeber - Staff Engineer; Mr. Jim Dunbar – Chief 

Chemist.

12. Describe any known spills or released from each management area within the last ten 

(10) years.

There have been no known spills or releases from any management area within the past ten 

years, with the exception of Management Area #1 – Fly Ash / Bottom Ash Generation Process. 

As outlined in question #11, UGID has conducted a groundwater investigation and assessment 

into the possibility slurry water contained in the surface impoundments may have migrated 

laterally and impacted groundwater. The investigation is ongoing with the PADEP Northeast 

Regional Office overseeing monthly groundwater sampling events. 

This information was supplied by; Mr. Jeff Steeber - Staff Engineer; Mr. Jim Dunbar – Chief 

Chemist.

13. For each management area, identify any seepage flows, as well as their origins, flow 

paths and destinations. Indicate the location of these flows on the map provided in 

response to request #2. Provide any reports or documentation with sampling results 

and/or information about the volumes of these seepage flows from the last five (5) years. 

In 2007, a spring was sampled north of the impoundments. The spring is identified as Hunlock 

Spring - North. No volume or flow rate was determined, however, the spring continues to flow. 

Analytical results can be found on the attached disc in Appendix K.

In June 2009, an additional wet area was discovered just south of the impoundments. The 

spring was identified as Hunlock Spring – South. The spring was monitored and sampled. 

Analytical results can be found on the attached disc in Appendix K. It has been noted that since 

the operation of the impoundments has stopped in May 2010, the area has dried and is no 

longer available for sampling.

Both springs have been identified on the map provided in Appendix C.
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This information was supplied by; Mr. Jeff Steeber - Staff Engineer; Mr. Jim Dunbar – Chief 

Chemist.

14. Provide any hydrological studies conducted at the facility within the last five (5) years.

A groundwater-monitoring program was established in July 1997 to provide data on the 

groundwater in the immediate area of the surface impoundments. A total of four (4) monitoring 

wells, designated MW-4, MW-5, MW-6 and MW-7, were installed throughout the facility. These 

wells were installed as part of the monitoring requirements for the surface impoundments. 

Reviewing the installation information, the four (4) wells were completed to a depth of 

approximately 15 feet below the static water level. Each well was screened from approximately 

15 feet below the static water level to 5 feet above the static water level. The depth of each 

well is 40 to 55-feet below ground surface (bgs). Each well was cased with Schedule 40 PVC 

with 0.020-inch factory slotted screen. No. 2 grade sand pack was placed in the annulus from 

the base of the screen to approximately two feet above the top of the screen. A bentonite seal 

to the ground surface was installed. Following the installation of the PVC casings, steel casing 

was installed to secure the PVC well. The locations of wells were chosen utilizing a number of 

sources namely soil atlases, topographic maps, the site layout, water well inventory data and 

historic Fly Ash case studies. The July 1997 report determined the upgradient-monitoring well 

to be MW-4. Monitoring well MW-4 is located at the northwest corner of the subject property. 

The monitoring well is located as the point at facility which is not likely to be affected by the two 

surface impoundments and most likely to provide representative background water data. 

According to the July 1997 report, three additional monitoring wells (MW-5, MW-6 and MW-7) 

were installed at three separate locations; all are hydraulically down gradient in the direction of 

decreasing static head from the surface impoundments. The wells were installed along the strip 

of land between the surface impoundments and the Susquehanna River. The strip of land 

makes up the southwest border of the property. 

UGID contracted Quad Three Group, Inc. to conduct a groundwater assessment at the Hunlock 

Power Station, Hunlock Creek, in August of 2008. The assessment included a total of thirty (30) 

soil boring were completed throughout the subject property, with each of them being developed 

into a 0.75” preliminary groundwater monitoring well. Two rounds of groundwater samples were 

collected from the 30 wells in September and October of 2008. From the data collected, a 

Groundwater Assessment report was submitted the Pennsylvania Department of Environmental 

Protection (PADEP) in December of 2008. 

On February 10, 2009, UGID received correspondence from the PADEP in response to the 

December 2008 report. Based on PADEP’s recommendation, seven (7) 4” diameter 

groundwater monitoring wells were installed throughout the subject property. These seven 

wells, plus the four previously existing wells were sampled once in April and once in May of 

2009. 
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An additional 133 soil borings were performed throughout the subject property in an effort to 

address the site-wide subsurface media composition as well as surface impoundment liner 

integrity.

Addendum #1 was submitted to PADEP in August of 2009. PADEP responded with a letter 

dated January 6, 2010, addressed to Mr. Jeffrey Steeber, UGID, requesting more explanation of 

findings as well as some additional work. 

In March of 2010, an additional 4” groundwater monitoring well was installed at the southeast 

portion of the property. This well was sampled in March of 2010 and analytical data was 

included in the First Quarterly Groundwater Report (January, February, March) of 2010.

A copy of the groundwater assessment and addendums including analytical for groundwater 

and soil samples, boring logs as well as the latest quarterly groundwater monitoring report, can 

be found on the attached disc; Appendix J 

This information was supplied by; Mr. Jeff Steeber - Staff Engineer; Mr. Jim Dunbar – Chief 

Chemist.

15. Identify any known drinking water wells within a five (5) mile radius of the facility’s outer 

boundaries. Provide any monitoring or sampling results that demonstrate hazardous 

constituents present within these wells.

Appendix L, on the attached disc, contains a list of 246 wells identified in a 5 mile radius 

surrounding the Hunlock Power Station facility. 

Environmental Data Resources provided an EDR GeoCheck® Report. This report is a list of 

groundwater monitoring wells located within a 3 mile radius. It also includes analytical results 

for public wells if available. A five mile radius with analytical results was not available. 

This information was supplied by; Mr. Jeff Steeber - Staff Engineer; Mr. Jim Dunbar – Chief 

Chemist.

16. Describe the cooling system at the facility. If applicable, submit the source of the water 

withdrawn and the amount of water withdrawn in gallons per day. If applicable, describe 

the cooling water intake screen backwash system and identify the individual backwash 

flows, the volume, and the discharge points for each flow. Submit any sampling results 

of the backwash.

Cooling Water Intake Structure

The Hunlock Power Station withdraws water for condenser cooling, service water, and ash 

sluicing from the Susquehanna River using a single Cooling Water Intake Structure (CWIS). 

The CWIS consists of a screen house at the river with two parallel intake bays that lead to the 

intake pumps. The condenser cooling water system is a once-through type.
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The screen house structure is located on the shoreline at the end of the intake channel at 

41o12’03” N latitude and 76 o 04’09” W longitudes. The screen house has been designed to 

include two parallel flow paths from the river to the pumps. Each flow path includes a trash 

rack, traveling water screen, chlorination equipment, and service water, ash sluice water, and 

circulating water pumps. Each traveling screen can be isolated with stop logs in the inlet and 

outlet sides of the screen. A sluice gate installed between the two flow paths allows for 

operation of all pumps with only one traveling screen in operation.

The trash racks extend from the screen house floor at elevation 483.0 feet above mean sea 

level (MSL) to elevation 512.0 feet (MSL). There are four sections, two per screen house 

opening, with each section designed for lift-out by the gantry crane on top of the screen house 

structure. The trash racks are designed to prevent large floating debris from entering the 

traveling screens. The trash racks are manually cleaned when required. 

The traveling screens are Link-Belt Model No. 45-A Vertical Traveling “Clean Water” intake 

screens with #14 (W&M) wire with 3/8” square openings to reduce entrainment of smaller sized 

materials and organisms in the plant cooling system. The screen baskets are 6’-0” wide with 

55’-0” shaft centers. A screen washing system is provided for cleaning the traveling screens. 

The screens are rotated approximately 30 minutes every shift. The screens are cleaned by a 

high-pressure spray wash that discharges into a collection / debris trough that is 14” deep x 16” 

wide and approximately 22 feet long. The trough runs along both screens at the top of the 

CWIS. At the southern end of the trough, screen wash water passes through a screen 

approximately 15 1⁄2 “ wide x 32” long with 1⁄4” mesh to a pipe which discharges back into the 

inlet channel on the Susquehanna River. 

The intake pumps include two circulating water pumps for main condenser cooling, three 

service water pumps, and two ash sluice water pumps. The pump capacities are based on the 

pump manufacturer’s data and do not account for head loss, pipe capacity and other “as-built” 

conditions. A summary of the pumps, pump function, design capacity, and water source is 

provided in Table 1-1 below. The current total design intake flow is 42,400 gallons per minute 

(gpm), or 61.1 million gallons per day (MGD). 

TABLE 1-1: HUNLOCK STATION INTAKE PUMP DESIGN CAPACITIES1

Pump Description Function

Capacity of Each 

Pump (gpm) Water Source

Unit No. 3A Circulating Pump Unit 3 Condenser Feed 17,0002 Unit 3 Intake Tunnels

Unit No. 3A Circulating Pump Unit 3 Condenser Feed 17,0003 Unit 3 Intake Tunnels

Ash Sluice Pump No. 1 Ash Sluice 1,100 Unit 3 Intake Tunnels

Ash Sluice Pump No. 2 Ash Sluice 1,100 Unit 3 Intake Tunnels

Service Water Pump No.4 Plant Service Water 2,100 Unit 3 Intake Tunnels

Service Water Pump No. 5 Plant Service Water 2,100 Unit 3 Intake Tunnels

No. 3 Service Water Pump4 Unit 3 Service Water 2,100 Unit 3 Intake Tunnels

Total Capacity CWIS 42,400
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The discharge from cooling water is monitored and managed under the NPDES Permit No. PA0008664, APS ID No. 5551679 and Authorization ID No. 590637. The discharge point is 

identified as 001. 

This information was supplied by; Mr. Jeff Steeber - Staff Engineer; Mr. Jim Dunbar – Chief 

Chemist.

17. Provide analyses performed on the slope stability (including liquefaction studies), inflow 

design floods, or dam breaks for any of the management areas within the last five (5) 

years.

UGID has not performed any slope stability analysis, inflow design floods, dam breaks within the 

past 5 years in any of the management areas. 

The surface impoundments walls are observed by the UGID operators on a regular basis. From 

this visual observation, there has not been any observed failure issues, these include, erosion, 

over topping, or berm sluffing. Any evidence of erosion has been immediately addressed and 

repaired.

The surface impoundments are within the NPDES permit areas. The hydraulic capacity and 

design of the stormwater is addressed in the stormwater management plan and this plan 

addresses the capacity of the ability of the hydraulic structures to pass the required rainfall 

event. These plans have been reviewed and approved by the appropriate Commonwealth 

Agencies (County SCS and PA DEP).

Within Management Area #1, there are installed a series of monitoring points to determine 

groundwater elevation and perform groundwater sampling. Some of the monitoring points are 

located in berm area, areas up and down slope. While overall the points were installed for 

groundwater elevations, that shows that the Freatic water level through the berms is not 

elevated and the area is well drained. The down gradient slopes of the berms are well vegetated 

and provide erosion protection. They are well maintained and offer quick evidence of seepage 

or sluffing.

The low levels coupled with long term observation indicate that the slopes are stable and the 

potential for failure will be mitigated by stability and regular observation.

James P Palumbo, PE

NOTE: As of May 22, 2010, this “management area” is no longer in service and is currently 

being closed under the Commonwealth of Pennsylvania, Department of Environmental 

Protection, Northeast Regional Office. This closure is due to a repowering of the plant.

L:\Projects\94\9477.01 UGI Fly Ash\EPA Data Request\EPA Requested Information.Docx
72 Glenmaura National Boulevard

Moosic, PA 18507

570.342.5200

www.quad3.com